EP2132117A1 - Method and control circuit for the adjustment of a gap - Google Patents
Method and control circuit for the adjustment of a gapInfo
- Publication number
- EP2132117A1 EP2132117A1 EP08735065A EP08735065A EP2132117A1 EP 2132117 A1 EP2132117 A1 EP 2132117A1 EP 08735065 A EP08735065 A EP 08735065A EP 08735065 A EP08735065 A EP 08735065A EP 2132117 A1 EP2132117 A1 EP 2132117A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gap
- material surface
- control circuit
- gap width
- predetermined
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 114
- 239000000463 material Substances 0.000 claims abstract description 208
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- 230000000694 effects Effects 0.000 claims description 29
- 230000002829 reductive effect Effects 0.000 claims description 10
- 230000000452 restraining effect Effects 0.000 claims description 9
- 238000004590 computer program Methods 0.000 claims description 8
- 230000009347 mechanical transmission Effects 0.000 claims description 7
- 230000003247 decreasing effect Effects 0.000 claims description 6
- 230000007723 transport mechanism Effects 0.000 claims description 5
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
- B65H3/52—Friction retainers acting on under or rear side of article being separated
- B65H3/5246—Driven retainers, i.e. the motion thereof being provided by a dedicated drive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/10—Size; Dimensions
- B65H2511/13—Thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
- B65H2515/30—Forces; Stresses
- B65H2515/32—Torque e.g. braking torque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
- B65H2557/60—Details of processes or procedures
- B65H2557/61—Details of processes or procedures for calibrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/66—Envelope filling machines
Definitions
- the invention relates to a method and a control circuit for setting a gap, in particular a gap, through which a good is conveyed.
- Paper handling systems such as Inserting systems include applications where a stack of goods, e.g. Leaves or envelopes, one sheet or envelope for processing in the system is provided.
- Such systems include, for example, slip feeders or envelope feeders, but also folding units, which are provided with goods from a stack individually or in groups from a stack.
- Embodiments of the invention relate to a method for adjusting a gap through which a product is to be conveyed, comprising the following steps:
- control circuit for adjusting a gap through which a product is to be conveyed, wherein the control circuit is configured to to drive a rotatable member with a predetermined torque;
- Fig. 1 is a schematic representation of a supplement feeder
- FIG. 2A-2B is a schematic representation of a method for adjusting the sluice gap according to embodiments of the invention in a supplement feeder of Fig. 1.
- 3 shows a flow chart of the method for setting the lock gap according to another
- 4a-4f are cross-sectional views of arrangements for realizing the gap, according to embodiments of the present invention.
- FIG. 5 shows a schematic representation of an arrangement according to the invention for realizing a gap, according to a further exemplary embodiment
- FIG. 6 is a flowchart of a method for setting an operating gap width, according to a no embodiment of the present invention.
- FIG. 7 shows a flowchart of a method for setting the operating gap width, according to a further exemplary embodiment of the present invention.
- Fig. a schematic representation of a method for adjusting the sluice gap, according to embodiments of the invention.
- Fig. 9 is a flowchart of a method for adjusting the lock gap, according to an embodiment of the invention.
- FIG. 10 shows a schematic illustration of a method for adjusting the lock gap according to exemplary embodiments of the invention
- Fig. 11 is a flowchart of a method for adjusting the lock gap, according to an embodiment of the invention.
- FIG. 12 is a flowchart of a method for adjusting the lock gap, according to an embodiment of the invention.
- FIG. 1 shows a supplement feeder comprising a transport belt 100, which is guided around a suction drum 102 and about further guide rollers 104, 106 and 108.
- the transport belt 100 is driven in the conveying direction A.
- two fixed lock rollers 110a and 110b are provided, which are arranged between the suction drum 102 and the guide roller 104 such that the transport belt 100 is also moved over the lock rollers.
- the lock rollers 110a and 110b are attached to a holder 112.
- the installer feeder includes a controller 120 which controls the operation of the insert feeder.
- the controller 120 is connected to a servo motor 122 for moving a chassis 124, as indicated by the arrow 126.
- a chassis or support 124 of the lock counter-rotating belt 128 is arranged, which is guided over a plurality of guide rollers 130 to 138 and against the conveying direction A is driven (preferably clocked). As can be seen in FIG.
- a gap 140 (also referred to as a lock gap) is defined adjustable by the distance between the transport belt 100 and the lock rollers 110a, 110b and the countercurrent belt 128.
- the servo motor 122 causes a lateral movement of the chassis 124 and thus the counter-rotating belt 128, whereby the gap 140, so the distance between the rollers can be adjusted.
- the supplement feeder further comprises a baffle 142 and a counter roll 144 for advancing a product after singulation in a desired direction.
- a crop receptacle 145 for receiving a stack of goods 146 for example a sheet or paper stack, is provided, which is shown schematically in Fig. 1 and from which the individual goods 148 are deducted.
- the goods 148 are arranged standing in the stack 146 (standing on one of the edges) and rest against a stop 150.
- the goods 148 facing surface of the stopper 150 is flush with the belt 100 in a forward direction A region, wherein the suction drum and the transport belt 100 cooperate to suck the foremost material of the stack 146 and to move in the conveying direction A. If the gap 140 is set correctly, only a single good is allowed through. A possibly double-deducted good, so another deducted Good is retained due to the small width and working counter to the direction of counter-belt 128.
- the crop receptacle 145 further includes a guide member 152 extending to the gap 140 through which the goods are dispensed.
- the guide member 152 e.g. a guide plate, also have other forms.
- the guide member 152 may be e.g. have a rounding in the region of the gap 140 to guide the goods in the direction of the gap 140 and the guide roller 130.
- the goods receptacle 145 For feeding the goods to the stop 150, the goods receptacle 145 comprises a goods transport 154, which comprises two parallel belts 154a and 154b, which convey the introduced goods standing in the direction of the stop 150.
- the Guttransport 154 further includes a rear, movable stopper 154c, which holds the goods introduced.
- the belts 154a and 154b are arranged in a bottom plate 156 of the Gutfact 145.
- a sheet feeder comprises a separating lock which comprises, for example, a first transport belt which runs around at least one suction drum in order to remove individual goods from a stack of goods in a conveying direction. Furthermore, a lock Mating belt provided, which is driven in a direction opposite to the conveying direction of the goods and cooperates with the transport belt to form the separating lock. More specifically, the transport belt and the lock mating belt are arranged to each other such that the lock gap is set therebetween. The distance between the conveyor belt and the lock-face belt is selected so that when a product is removed from the stack, only the removed material is moved through the lock gap. Other goods that may also be deducted will be withheld.
- the transport belt used also transport or counter-rotating rollers can be used.
- the functionality is similar both when using belts and when using rollers or a combination of roller and belt.
- a user will manually set the lock gap to a suitable width for the material to be processed before the start of singulation.
- the width is selected such that, on the one hand, double deductions, ie the simultaneous removal of two or more goods, and, on the other hand, a "non-removal" of goods is reliably avoided whereas the counter-rotating or counter-rotating rollers are movably (displaceable) so as to be able to adjust the sluice gap to the width required for the material to be processed by a corresponding displacement of the counter-rotating device
- the lock gap is then adjusted by moving the mating belt and, when adjusting the gap, the restraining force of the between the Transport unit and the retaining element clamped Guts to be observed during transport through the lock.
- the lock setting or the adjustment of the pull-out force (restraint force of the goods clamped between the transport unit and the counter holding element when transported through the lock) is carried out manually on the basis of the personal "feeling" or manually with a measuring or adjusting instrument, eg a spring balance.
- a measuring or adjusting instrument eg a spring balance.
- the lock adjustment is realized so that the pull-out force is less than a possible pull-off force
- the manual adjustment described above does not allow a precise and reproducible lock adjustment.
- Embodiments of the present invention allow adjustment of the lock pull-out force side-by-side and material-independent.
- the setting can be done fully automatically without user intervention according to the following method.
- the supplement is placed in the feeder and at the lock.
- the lock is then opened by, for example, the transport unit and the holding unit are moved apart relative to each other.
- the supplement is inserted into the open lock and stopped in the lock.
- the retaining element for example the counter-rotating roller, is acted upon by a specific torque in order to drive it against the conveying direction.
- the predetermined torque which was applied to the counter-rotating roller, for example, corresponds to the amount of injected current in a flanged stepper motor.
- the angry Torque is proportional to the injected current and can be adjusted accordingly by this.
- the lock is closed by an automatic feed of the retaining element until the retaining element stops due to the applied force.
- the applied force results from the friction force resulting from the applied normal force and the coefficient of friction on the side surface of the insert.
- the lock can be closed even further.
- decreasing the nip width may be stopped as soon as the restraining element stops due to the applied force.
- Embodiments of the invention can realize the closing of the lock in small steps.
- the engine may be coupled to the rotatable member via a mechanical transmission, wherein the mechanical transmission is dimensioned in response to a desired restraining force in the gap to adjust the predetermined torque.
- the now Found lock setting corresponds to a pull-out force, which is proportional to the torque applied by the injected current.
- This pull-out force can always be set the same way by this method, regardless of
- the shim thickness, the surface structure, - the nature, and / or the structure and nature of the transport and restraint element or their conditions of soiling and wear are the shim thickness, the surface structure, - the nature, and / or the structure and nature of the transport and restraint element or their conditions of soiling and wear.
- the pull-out force can be adjusted by this method, regardless of material always the same and constant to a level below the withdrawal force. Since this value is decisive and characteristic element of a reliable functionality, the method described allows a simple and reliable setting.
- the retaining element In production operation, the retaining element is subject to ongoing wear, so that this also changes the conditions in the air gap and thus the pull-out force.
- the correction of these conditions in the event of a fault and the compensation of wear, which was traditionally done manually only when needed, are now possible by the method according to embodiments of the invention fully automatically and at regular times.
- Embodiments of the invention therefore allow the detection of wear of the retaining element by the change in the lock gap (distance between the transport element and the retaining element) is determined, and possibly also compared with the measured thickness of the goods.
- the currently prevailing frictional force can be determined. Possible deviations from an initial state can also be indexed, for example, by increasingly occurring false or double prints.
- corrective measures can be taken, such as, for example, a readjustment of the pull-out force or of the lock gap.
- Embodiments of the invention optimize the process so that it takes only about 25 seconds, whereby the corrective actions can also be performed periodically during ongoing production.
- Embodiments of the invention may be embodied as a digital storage medium, such as a floppy disk or file, that includes electronically readable control signals that may interact with a programmable computer system such that the method is practiced in accordance with embodiments of the invention.
- the invention may be implemented as a computer program product having program code stored on a machine-readable carrier for carrying out the method when the program product runs on a computer.
- the invention may be implemented in the form of a computer program with program code for carrying out the method according to embodiments of the invention when the program runs on a computer.
- Fig. 2 shows a schematic representation of a method for adjusting the sluice gap according to an embodiment of the invention, in a feeder according to Fig. 1.
- Fig. 2A is schematically the sluice 140 with two parallel guide elements 141a, 141b (eg guide plates), the role 110a and the counter-roller 130, wherein it is arranged movable with respect to the roller 110a, as indicated by the arrow 170.
- the rotatable element 130 is movably arranged to be displaced so as to be displaced by one of the guiding elements.
- 141a, 141b may extend to contact the material in the gap.
- a product 148 is shown, which is retracted into the open gap 140 shown in FIG. 2A.
- the driven roller 130 is shown in dashed lines, which is driven with a predetermined torque against the conveying direction, and, as shown by the arrow 172, is moved in the direction of now arranged in the lock material 148, namely until roller 130 stops.
- an operator places an insert on the trigger, as shown at 148. This is held for example by suction openings on the outlet flap.
- the shim 148 is moved into the sheath 140 via a trigger mechanism.
- the counter-roller 130 is turned on with a fixed current and at the same time closes the lock 140. So that the large distance to the supplement is achieved as quickly as possible, can drive, according to embodiments, the lock at its highest speed. If the lock has reached the supplement, the mating roller 130 is thereby braked to a standstill. This is detected by a rotary encoder on the mating roller.
- the lock is now opened again with small steps until the counter-roller 130 moves again.
- the lock is closed again and the step size is reduced again.
- the supplement Before the last measurement, according to embodiments of the invention, the supplement can be moved by a distance, for example a few millimeters or centimeters, as the insert at the measuring point has already been pressed flat by the preceding measuring. This can lead to too tight a result with rough inserts. Furthermore, this may take into account any unevenness or irregularities of the surface of the rotatable element 130 and / or abrasion of the material due to the initial conveyance into the gap. By advancing a new position of the supplement is achieved. Now in the last measurement the lock with a still opened smaller step resolution. As soon as the counter-roller begins to turn again, a desired lock opening is reached.
- a first step S100 the method begins, which can be stored, for example, by appropriate programming in the controller (see FIG. 1) of the investor.
- a step S102 the lock is opened, the shim is retracted, and the desired torque of the reverse roller is selected. Further, the reverse roller is turned on, and the current applied to a stepping motor is adjusted according to the desired torque.
- step S104 it is checked whether the mating roller is still rotating. If this is the case, then the lock gap is closed by a first distance (with a first step size) in step 106.
- step S104 the rotation of the mating roller is checked again.
- the method proceeds to step S108, in which the lock gap is incrementally smaller by a second distance than the first distance (with a second increment smaller than the first first step size) is opened until the Ge ⁇ genlaufrolle again (the inhibition rotates thus for example a further predetermined condition is met), which is checked in step silo.
- step S112 The Gegenlaufrol- Ie begins to rotate again, the lock gap is a third distance smaller than the second Ent ⁇ fernung in step S112 is closed (with a third step size smaller than the second step size) mm until the reverse roller stops again, which is checked in step S114. Subsequently, the shim is further conveyed by a predetermined distance in step S116, whereupon, in step S118, the sluice gap is kept as long as a fourth distance smaller than the third distance (with a fourth increment less than the third increment) is reopened until the mating roll begins to rotate again, which is monitored at step S120. If the mating roller starts to rotate again, it is turned off in step S122 and the insert is issued. The lock setting now achieved corresponds to the desired lock setting, and the method ends in step S124.
- Embodiments may include only steps S104 and S106 for adjusting the gap.
- Other embodiments may include steps S104 to SI10 or steps S104 to S114 to adjust the gap.
- the stock 148 may be moved in step S116 by a distance selected so that a portion of the stock 148 may be contacted with the rotatable member 130 that was not previously in contact with the rotatable member 130.
- the product 148 may be moved in step S116 by a distance of between about 1 mm and the product length.
- the first increment in step S106 may be between about 125 mm and about 25 mm.
- the second increment in step S108 may be between about 10 mm and about 0.1 mm.
- the third increment in step S112 may be between about 0.1 mm and about 0.01 mm.
- the fourth increment in step S118 may be between about 0.01 mm and about 0.001 mm.
- the second increment in step S108 may be about 1/5 to about 1/20 of the first increment
- the third increment in step S112 may be about 1/5 to about 1/20 of the second increment
- the fourth increment in FIG Step S118 may be about 1/5 to about 1/20 of the third increment be.
- the second step size in step S108 may be about 1/10 of the first step size
- the third step size in step S112 may be about 1/10 of the second step size
- the fourth step size in step S118 may be about 1/10 of the third step size Be increment.
- the rotatable element 110a, 130 may comprise a roller, a roller or a belt.
- the gap is formed between two transport elements of a transport mechanism for conveying goods in a conveying direction, wherein one of the transport elements is drivable at the predetermined torque, and wherein the driven transport element 130 is moved against the material contained in the gap, until the driven transporting element 130 stops.
- One of the transport elements can be driven counter to the conveying direction.
- the transport elements of the transport mechanism for conveying goods 148 in a conveying direction may comprise a pair of rollers, a pair of rollers, a pair of belts, a combination of roller and belt or a combination of roller and belt.
- the rotatable element may be provided as an additional element.
- the gap is defined by two elements which are movable relative to each other, for example by two non-rotatable elements such as guide plates. Combinations of a non-rotatable element with a roller, a roller or a belt may also be used. Also, as described above, a pair of rollers, a pair of rollers, a pair of belts, a combination of roller and belt or a combination of roller and belt may be provided to define the gap. Based on the position of the rotatable element at the end of the adjustment process, the relative displacement of the two elements can then be carried out. to adjust the gap according to the desired retention force.
- embodiments of the invention enable a fully automatic and, in particular, material-independent adjustment of the lock gap and the pull-out force, which also takes into account wear aspects of the transport elements.
- the method described can be carried out when predetermined events occur, for example at periodic points in time or after the detection of a specific error frequency, in order to enable readjustment of the lock gap.
- a lock setting is achieved, which always allows a secure separation.
- the invention is not limited to use with side-feeders. Rather, the invention finds its use at a variety of locations within a paper handling facility.
- the setting of a gap, e.g. between two transport elements, may be desirable at other stations, for example in the setting of a distance between two transport rollers of a folding unit, in a sheet feeder or in an envelope feeder.
- a method for adjusting a gap between a first material surface and a second material surface through which a product is to be conveyed comprises the following steps:
- a friction between the material in the gap and the first material surface depends on the gap width.
- the narrower the gap the greater is a pressure acting on the material to be conveyed pressure, and the greater is a friction between the material to be conveyed and the first material surface.
- This friction counteracts the drive action exerted on the first material surface so that the drive effect is effectively inhibited.
- An inhibition of the drive effect is understood to mean an effect which counteracts the drive effect, it not being assumed that the drive effect must be completely eliminated.
- the inhibition of the drive effect can be demonstrated, for example, by the fact that the first material surface at a predetermined driving force acting on the first material surface (or with a predetermined drive torque acting on the first material surface) reaches a predetermined speed (which may be greater than or equal to zero). is slowed down.
- the inhibition of the drive effect can also be demonstrated, for example, in that in a system in which the speed of movement of the first material surface is controlled such that the material surface moves at a predetermined minimum speed, the force required to drive the first material surface is a predetermined value reached.
- it is determined quite generally (for example indirectly) how strongly the friction between the material to be conveyed and the first material surface counteracts the driving force (or drive effect) acting on the first material surface.
- there are various arrangements to form the gap Some of these possibilities will be described here by way of example, with the following list of possibilities not to be understood as exhaustive, but merely as an example.
- FIG. 4a shows a cross section through an arrangement for forming a gap, according to an exemplary embodiment of the present invention.
- the arrangement according to FIG. 4 a is designated in its entirety by 400 and comprises a first guide element 412 which serves as a guide for a belt or a band 414. Furthermore, the arrangement 400 comprises a second guide element 416. The gap 140 thus exists between the belt or band 414 and the second guide element 416.
- a lower surface 414a of the belt or belt 414 forms the first material surface
- the upper surface 416a of the second guide element 416 forms the second material surface
- the guide element 412 does not necessarily have to be a rotatably mounted component. Rather, a substantially torsionally rigidly mounted component, for example a rounded or curved guide plate, can be used.
- a substantially torsionally rigidly mounted component for example a rounded or curved guide plate, can be used.
- the belt or belt 414 is driven by suitable drive means, not shown, using a drive action (eg, application of force or torque, respectively).
- a drive action eg, application of force or torque, respectively.
- an adjustable torque stepper motor may be used to drive the belt 414.
- Fig. 4b shows a cross section through a further arrangement for providing a gap.
- the arrangement according to FIG. 4b is designated 420 in its entirety.
- the arrangement 420 differs from the arrangement 400 according to FIG. 4 a only in that the guide element 412 is replaced by a guide roller 422.
- the guide roller 422 is preferably rotatably mounted. Further, the guide roller 422 is mounted in one embodiment so that it is displaceable relative to the second guide member 416, so that the gap width of the gap 140 is adjustable.
- the roller 422 may serve as a drive for the belt 414 or may merely form a passive (non-driven) guide roller.
- Fig. 4c shows a cross-sectional view of an arrangement for providing a gap, according to another embodiment of the present invention.
- the arrangement according to FIG. 4c is designated in its entirety by 430.
- the arrangement 430 essentially corresponds to the arrangement 420 according to FIG. 4b.
- the belt or band 414 has been dispensed with.
- the surface 434a of the roller 422 serves as the first material surface
- a surface 416a of the second guide member 416 serves as the second material surface.
- the roller 422 is for example rotatably mounted and can be driven in one embodiment.
- 4d shows a cross-sectional view of a further arrangement for realizing a gap, according to a further exemplary embodiment of the present invention.
- the arrangement according to FIG. 4d is designated 440 in its entirety.
- the assembly 440 includes a first roller 442 and a second roller 444.
- a surface 442a of the first roller 442 serves, for example, as the first material surface, while a surface 444a of the second roller 444 serves as the second material surface.
- the first roller 442 is a driven roller while the second roller 444 is a non-driven (passive) roller.
- the two rollers 442, 444 are driven. Furthermore, it is not absolutely necessary that both rollers 442, 444 are rotatably mounted. Rather, it is sufficient if only one of the two rollers is rotatably mounted.
- the rollers 442, 444 are supported so that a gap width between the surfaces 442a, 444a through which the product can be conveyed is adjustable.
- a gap width between the surfaces 442a, 444a through which the product can be conveyed is adjustable.
- only one of the rollers can be movable, or both rollers can be movable.
- FIG. 4e shows a cross-sectional view of a further arrangement for realizing a gap.
- the arrangement of FIG. 4e is designated in its entirety by 450.
- the assembly 450 includes, for example, two rollers 452, 454, both of which may be rotatably mounted. Via the first roller 452, a first belt or belt 456 is guided, and via the second roller 454, a second belt or belt 458 is guided.
- a surface 456a of the first belt 456 forms the first material surface
- a surface 458a of the second belt 458 forms the second material surface. area. It should be noted that the first belt 456 and / or the second belt 458 may be driven.
- the drive can take place, for example, via the rollers 452 and / or 454, or else by further drive means, which are not shown here.
- the rollers 452, 454 are arranged so that the gap width of the gap between the first surface 456a and the second surface 458a can be changed.
- Fig. 4f shows a cross-sectional view of another arrangement for the realization of a gap, according to a further embodiment.
- the arrangement according to FIG. 4f is designated in its entirety by 460.
- the assembly 460 includes a linear actuator 462 having a driven member 464.
- a surface 464a of the driven member 464 may form the first material surface.
- the arrangement 460 comprises a second guide element or a solid component 466, whose surface 466a forms the second material surface.
- the gap 140 exists between the surface 464a of the driven member 464 and the surface 466a of the second guide member.
- the linear drive 462 can be designed, for example, to drive the driven component 464 with a specific, specifiable or predeterminable force.
- the first surface of the gap 140 be directly formed by a surface of the driven member 464.
- a transmission means for example, a belt, a belt, a gear or other mechanical transmission means
- a transmission means may be provided to transmit the force provided by the linear drive 462 force on a located in the region of the gap 140 first material surface.
- both surfaces ie, for example, both the first material surface, which forms a first boundary of the gap, and the second material surface, which forms a second boundary of the gap
- both surfaces ie, for example, both the first material surface, which forms a first boundary of the gap, and the second material surface, which forms a second boundary of the gap
- the first material surface and the second material surface may be driven in the same directions with respect to the product.
- the same speeds or different speeds for the relative movement of the first material surface with respect to the material or for the relative movement of the second material surface with respect to the material can be selected.
- the first surface and the second surface may be driven in different or opposite directions with respect to the material. As a result, for example, a total force can be reduced to the good.
- Fig. 5 shows a cross-sectional view of an arrangement for realizing a gap, according to another embodiment of the present invention.
- the arrangement according to FIG. 5 is designated 500 in its entirety.
- the assembly 500 includes a belt or strap 510 and a plate 520.
- the plate 520 acts as a guide plate to guide the goods to a gap between the plate 520 and the strap 510.
- the gap is designated 140.
- the assembly 500 further includes a drive member 530 configured to drive the belt 510 using, for example, a predetermined drive force or using a predetermined drive torque.
- the drive element 530 may comprise, for example, an attached roller.
- the assembly 500 includes means configured to move the sheet 520 toward the belt 510 with a force F (which may differ from the driving force to drive the belt 510) toward the belt to press.
- F which may differ from the driving force to drive the belt 510
- the method according to FIG. 6 is designated in its entirety by 600.
- the method 600 includes a first step 610 in which the first material surface is set in motion.
- a predetermined driving force which may also be defined by a predetermined drive torque
- the method 600 further includes a second step 620 of reducing the gap width until the first material surface is decelerated to a predetermined velocity Vo.
- the gap width is reduced continuously or stepwise until the predetermined speed is reached.
- the driving force or the drive torque is preferably kept constant. The default speed can be greater than or equal to zero.
- a gap width is assigned that is assigned to this state.
- an operating gap width is then entered as a function of the identified gap width. provides. For example, it can be determined that the operating gap width is greater than the identified gap width by a certain amount.
- the identified nip width may also be used directly as the operating nip width, for example, when deceleration does not occur until jammed, or when the predetermined drive force is significantly less than a selected drive force during operation.
- an additional fine adjustment of the gap width can alternatively take place.
- FIG. 7 shows a flowchart of another method for setting an operating gap width according to another embodiment of the present invention.
- the method according to FIG. 7 is designated in its entirety by 700.
- the method 700 comprises, in a first step, moving the first material surface in motion.
- a driving force is used, and furthermore the driving force is set in such a way that the first material surface moves with at least one predetermined minimum speed with respect to the material.
- a speed control can be carried out, for example, whereby the speed of the first material surface is regulated. For example, it can be assumed that the goods are recorded.
- a second step 720 for example, the gap width is reduced until the driving force reaches a predetermined value.
- the narrower the gap width the greater the friction between the first material surface and the product. Therefore, the driving force which is necessary to obtain the predetermined relaxingge ⁇ speed is increasing. If the gap width reaches a certain value, the required driving force thus reaches the predetermined value. The corresponding gap width is thus identified as the identified gap width.
- the operating gap width is then set as a function of the identified gap width. For example, the operating gap width may be larger by a predetermined value than the identified gap width. Alternatively, however, the operating gap width can be selected equal to the identified gap width. Furthermore, optionally, a fine adjustment of the gap width can take place.
- the method of the invention may be implemented in hardware or in software.
- the implementation may be on a digital storage medium, e.g. a floppy disk or CD, with electronically readable control signals that can interact with a programmable computer system such that the corresponding method is executed.
- the invention thus also consists in a computer program product with program code stored on a machine-readable carrier for carrying out the method according to exemplary embodiments of the invention when the computer program product runs on a computer.
- the invention can thus be realized as a computer program with a program code for carrying out the method when the computer program runs on a computer.
- Fig. 8 shows a schematic representation of a method for adjusting the sluice gap, according toheldsbei ⁇ play the invention.
- the method according to FIG. 8 differs from the method as described with reference to FIGS. 2A and 2B, essentially in that the counter roller 130 is moved away from the product 148 during the method, so that in the case of FIG Execution of the procedure Rens a gap width between the roller HOa and the counter-roller 130 is increased.
- the product 148 may be retained by retention members, shown schematically in FIG. 8, and designated 810a, 810b.
- a gap width between the roller HOa and the counter-roller 130 may be reduced, for example, in an initial state to such an extent that there is a strong stiction between the counter-roller 130 and a surface of the material 148.
- the counter-roller 130 can be acted upon, for example, with a drive effect, which acts on a rotation of the counter-roller 130.
- the drive effect can, for example, act on a movement of the surface of the counter roll 130 tangentially to the gap, so that the drive effect leaves the gap width unchanged.
- a torque acting on the counter-roller 130 can, for example, act on a movement of the surface of the counter roll 130 tangentially to the gap, so that the drive effect leaves the gap width unchanged.
- the gap width between the roller HOa and the counter-roller 130 in the initial state is comparatively small, then the stiction between the surface of the article 148 and the counter-roller 130 may cause the counter-roller 130 to move in spite of the effect of the drive (or driving) action Torque) does not turn.
- the movement of the Oberflä ⁇ che of the counter-roller 130 with respect to the goods 148 is thus inhibited by a static friction.
- the width of the gap between the roller HOa and the counter-roller 130 is increased in the method.
- the Ge ⁇ genrolle 130 is further acted upon by the driving action, for example in the form of a torque acting. Is the gap width sufficiently strongly increased, so the static friction between the surface of the material 148 and the counter roller 130 decreases until the counter roller 130, Example ⁇ , due to the forces acting on it driving action, begins to move when there is a certain gap width. From this point, it can therefore be assumed that in the gap width at which the counter-roller 130 sets in motion, the frictional force transmitted to the counter-roller by the surface of the goods 148 is smaller than the drive effect acting on the counter-roller 130. Thus, it can be determined as a whole when an inhibition of the drive effect (for example a frictional force exerted by the surface of the material 148 on the counter roller 130) reaches or falls below a predetermined value.
- an inhibition of the drive effect for example a frictional force exerted by the surface of the material
- the gap width between the roller 110a and the counter roller 130 reaches or falls below a predetermined value
- the gap width can be adjusted. For example, as the desired lock setting that gap width can be used at which the counter-roller 130 is just starting to move. However, it is also possible to set the desired lock setting starting from the value of the gap width at which the counter roll is just starting to move, e.g. a certain change in the gap width can be made. Further, based on the determination of which gap width the counter roll 130 is moving, a multi-step gap width adjustment method may be initiated, as already described, for example, with reference to FIG.
- the present invention includes a method of adjusting a gap between a first material surface and a second material surface through which a product is to be conveyed as shown in FIG.
- the method according to FIG. 9 is designated in its entirety by 900.
- the method 900 includes, in a step 910, impacting the first material surface with a driving action that is responsive to movement of the first material surface with respect to the material, such that the first material surface moves Driving effect leaves a gap width between the first material surface and the second material surface unchanged.
- a driving action that is responsive to movement of the first material surface with respect to the material, such that the first material surface moves
- Driving effect leaves a gap width between the first material surface and the second material surface unchanged.
- counter roller 130 can be subjected to a torque.
- the good to be promoted is located in the gap. Further, in the step 910, for example, the movement of the first material surface with respect to the material is inhibited by a frictional force between the first material surface and the material.
- a step 920 for example, the gap width is increased, wherein the first material surface continues to be acted upon by the drive effect.
- the gap width is set based on when (for example, at which gap width) an inhibition of the driving force by the frictional force increases or falls below a predetermined value (or, more generally, when the inhibition of the driving effect) certain condition is met).
- the gap width can be increased, with the first material surface still being supplied with the drive effect, until an inhibition of the drive effect by the frictional force in increasing the gap width satisfies a predetermined condition.
- the product 148 in addition to being in contact with the roller 110a and the counter roller 130, can be imparted with a driving action.
- This drive effect can be exerted on the material 148, for example by further rollers 1010a, 1010b.
- the gap between the counter roll 130 and the roll 110a can be set as follows:
- the material 148 which is located in the gap between the roller 110a and the counter-roller 130, can for example be acted upon by the further rollers 1010a, 1010b with a driving action, which acts on a relative movement between the surface of the counter-roller 130 and the material.
- the counter-roller 130 can be acted on (for example by a correspondingly driven motor, by a brake or by another means) with a holding action, which counteracts a rotation of the counter-roller 130.
- the gap width between the roller 110a and the counter roller 130 can be changed, wherein the material to be conveyed 148 is in the gap to determine at which gap width an inhibition that a relative movement between the surface of the counter roller 130 and the Good 148 counteracts, meets a predetermined condition. Further, generally speaking, the gap width can be adjusted based on which gap width the inhibition meets the predetermined condition.
- the holding action acting on the counter-roller 130 is “weaker” than the driving action exerted on the counter-roller 130
- the gap width between the roller 110a and the counter-roller 130 for example, starting from a large gap width, increasingly reduced, the property 148 is increasingly slowed down with increasing frictional force between the surface of the material 148 and held by the holding action counter-roller 130 and eventually comes to a stop (from a certain gap width).
- the gap width is increasingly increased, starting from a small gap width.
- the goods 148 are at rest and eventually start moving (at a certain gap width).
- the product 148 then sets in motion when the frictional force between the surface of the product 148 and the counter-roller 130 becomes smaller than the drive action exerted on the product 148, for example by the rollers 110a, 110b.
- the product 148 may be driven with a predetermined drive effect.
- one of the rollers 1010a, 1010b (or both rollers) may be driven at a predetermined torque. If the material 148 is driven with a predetermined torque, and further, the distance between the roller 110a and the counter-roller 130 is increasingly reduced, the material 148 comes in one embodiment from a certain gap width to stop. If it is assumed that the rollers 1010a, 1010b rest sufficiently firmly against the material 148, the rollers 110a, 110b also come to stop correspondingly, which are evaluated, for example, by a simple speed sensor which is connected to one of the rollers 1010a, 1010b can. Based on the determination of the gap width at which the material or the rotation of one of the rollers 1010a, 1010b is decelerated in a predetermined manner (for example up to a predetermined speed or until standstill), then an operating gap width can be set.
- the stock 148 moves between the roll 110a and the counter roll 130 while reducing the nip width. This can avoid that a certain surface area of the material 148 is flattened particularly strong. Thus, in some embodiments, a very precise adjustment of the gap width (sometimes even in a one-step process) is possible.
- some embodiments according to the invention include a method as shown in the flowchart of FIG.
- Fig. 11 shows a method 1100 for adjusting a gap between a first material surface and a second material surface through which a product is to be conveyed.
- the method 1100 includes, in a step 1110, loading a material to be conveyed, located in the gap between the first material surface and the second material surface, with a driving action that is responsive to relative movement between the first material surface and the product.
- the first material surface is acted upon in the step 1110 with a holding action, which counteracts a movement of the first material surface such that a gap width between the first material surface and the second material surface remains unchanged.
- the method 1100 includes varying the nip width in a step 1120 wherein the product to be conveyed is in the nip to determine at which nip width an escapement that opposes relative movement between the first material surface and the product meets a predetermined condition.
- the first material surface may still be subjected to a holding action.
- the method 1100 includes, in a step 1130, an adjustment of the gap width based on which gap width the inhibition reaches the predetermined condition.
- the first material surface is acted upon by a holding action, which counteracts a movement of the first material surface.
- the first material surface for carrying out the procedural ⁇ proceedings can be driven 1100th
- the first surface of the material may be a fixed surface that is rotationally fixed, for example.
- Fig. 12 shows a flow chart of a method for adjusting a gap between a first material surface and a second material surface through which a product is to be conveyed.
- the method 1200 comprises, in a step 1210, exerting a drive action which acts on a relative movement between the first material surface and a material to be conveyed in the gap, such that the drive effect has a gap width between the first material surface and the second Material surface remains unchanged.
- the method 1200 includes, in a step 1220, varying the nip width to determine at which nip width an escapement that opposes the relative movement between the first material surface and the product to be conveyed meets a predetermined condition.
- the method 1200 further includes, in a step 1230, adjusting the gap width based on determining which gap width the inhibition meets the predetermined condition.
- control circuit for adjusting a gap between a first material surface and a second material surface through which a product is conveyed
- the control circuit may be configured to implement methods as described herein.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007016589A DE102007016589A1 (en) | 2007-04-05 | 2007-04-05 | Method and control circuit for setting a gap |
PCT/EP2008/002745 WO2008122433A1 (en) | 2007-04-05 | 2008-04-07 | Method and control circuit for the adjustment of a gap |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2132117A1 true EP2132117A1 (en) | 2009-12-16 |
EP2132117B1 EP2132117B1 (en) | 2018-10-31 |
Family
ID=39577704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08735065.8A Active EP2132117B1 (en) | 2007-04-05 | 2008-04-07 | Method and control circuit for the adjustment of a gap |
Country Status (5)
Country | Link |
---|---|
US (1) | US8825204B2 (en) |
EP (1) | EP2132117B1 (en) |
JP (1) | JP2010523433A (en) |
DE (1) | DE102007016589A1 (en) |
WO (1) | WO2008122433A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8083232B2 (en) * | 2009-08-25 | 2011-12-27 | Xerox Corporation | Substrate media transport system with spaced nip |
US8727099B2 (en) | 2010-05-24 | 2014-05-20 | Usnr/Kockums Cancar Company | Tapered roll feed |
EP2922669A4 (en) | 2012-11-21 | 2016-08-03 | Usnr Llc | Systems, methods and apparatuses for changing the direction/speed of a workpiece |
JP6082290B2 (en) * | 2013-03-19 | 2017-02-15 | 株式会社Pfu | Medium supply device |
US9171430B2 (en) * | 2013-08-06 | 2015-10-27 | Ncr Corporation | Media item transporter |
CN112757079B (en) * | 2020-12-31 | 2022-05-17 | 泉州市海恩德机电科技发展有限公司 | Intelligent stone material equipment of polishing |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998004484A1 (en) * | 1996-07-25 | 1998-02-05 | Siemens Nixdorf Informationssysteme Ag | Separating means with adjustable separation gap |
DE29823055U1 (en) * | 1998-12-18 | 1999-05-06 | Francotyp-Postalia AG & Co., 16547 Birkenwerder | Device for separating flat objects of different thickness and size from a stack |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2914097A1 (en) * | 1979-04-07 | 1980-10-16 | Pixa Joachim W Fa | DEVICE FOR SEPARATING A STACK OF SHEETS OR LEAF GROUPS |
JPS60213642A (en) * | 1984-04-06 | 1985-10-25 | Laurel Bank Mach Co Ltd | Bill feeder |
US5203846A (en) | 1991-11-12 | 1993-04-20 | A. B. Dick Company | Media feed roll apparatus and method for its use |
US5435540A (en) | 1992-12-01 | 1995-07-25 | Xerox Corporation | Apparatus and method for sheet feeding and separating using retard roll relief/enhancement |
DE29516265U1 (en) * | 1995-10-13 | 1995-12-07 | Mathias Bäuerle GmbH, 78112 St Georgen | Upsizing machine with a saddle folder |
DE29519061U1 (en) * | 1995-12-01 | 1996-01-25 | Mathias Bäuerle GmbH, 78112 St Georgen | Adjustable lock for paper sheets or the like. |
GB9718798D0 (en) * | 1997-09-05 | 1997-11-12 | Ncr Int Inc | Document feeding apparatus |
US6234470B1 (en) | 1998-03-18 | 2001-05-22 | Canon Denshi Kabushiki Kaisha | Sheet material feeding apparatus |
US6354583B1 (en) * | 1999-01-25 | 2002-03-12 | Bell & Howell Mail And Messaging Technologies Company | Sheet feeder apparatus and method with throughput control |
-
2007
- 2007-04-05 DE DE102007016589A patent/DE102007016589A1/en not_active Withdrawn
-
2008
- 2008-04-07 US US12/532,631 patent/US8825204B2/en active Active
- 2008-04-07 EP EP08735065.8A patent/EP2132117B1/en active Active
- 2008-04-07 WO PCT/EP2008/002745 patent/WO2008122433A1/en active Application Filing
- 2008-04-07 JP JP2010501446A patent/JP2010523433A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998004484A1 (en) * | 1996-07-25 | 1998-02-05 | Siemens Nixdorf Informationssysteme Ag | Separating means with adjustable separation gap |
DE29823055U1 (en) * | 1998-12-18 | 1999-05-06 | Francotyp-Postalia AG & Co., 16547 Birkenwerder | Device for separating flat objects of different thickness and size from a stack |
Non-Patent Citations (1)
Title |
---|
See also references of WO2008122433A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20100191368A1 (en) | 2010-07-29 |
JP2010523433A (en) | 2010-07-15 |
EP2132117B1 (en) | 2018-10-31 |
DE102007016589A1 (en) | 2008-10-09 |
WO2008122433A1 (en) | 2008-10-16 |
US8825204B2 (en) | 2014-09-02 |
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